import axios from 'axios'
import { MessageBox, Message } from 'element-ui'
import store from '@/store'
import { getToken } from '@/utils/auth'

// create an axios instance 创建一个axios实例
const service = axios.create({
  baseURL: process.env.VUE_APP_BASE_API, // url = base url + request url
  // withCredentials: true, // send cookies when cross-domain requests 跨域请求时发送cookies
  timeout: 5000 // request timeout 请求超时
})

// request interceptor 请求拦截器
service.interceptors.request.use(
  config => {
    // do something before request is sent 在发出请求前做点什么

    if (store.getters.token) {
      // let each request carry token
      // 让每个请求携带令牌
      // ['X-Token'] is a custom headers key
      // ['X-Token']是自定义头密钥
      // please modify it according to the actual situation
      // 请根据实际情况修改
      config.headers['token'] = getToken()
    }
    return config
  },
  error => {
    // do something with request error 处理请求错误
    console.log(error) // for debug  用于调试
    return Promise.reject(error)
  }
)

// response interceptor 响应拦截器
service.interceptors.response.use(
  /**
   * If you want to get http information such as headers or status 如果您想获取诸如头或状态之类的http信息
   * Please return  response => response  请返回response=>response
  */

  /**
   * Determine the request status by custom code  通过自定义代码确定请求状态
   * Here is just an example                      这里只是一个例子
   * You can also judge the status by HTTP Status Code  您还可以通过HTTP状态代码判断状态
   */
  response => {
    const res = response.data

    // if (res.Code === 0) {
    //   // console.log("dffd")
    //   Message({
    //     message: res.Message,
    //     type: 'info',
    //     duration: 5 * 1000
    //   })
    // }

    // if the custom code is not 20000, it is judged as an error. 如果自定义代码不是0，则判断为错误。
    if (res.Code !== 0) {
      Message({
        message: res.message || 'Error',
        type: 'error',
        duration: 5 * 1000
      })

      // 50008: Illegal token 非法令牌; 50012: Other clients logged in 其他登录的客户端; 50014: Token expired 令牌已过期;
      if (res.Code === 50008 || res.Code === 50012 || res.Code === 50014) {
        // to re-login
        MessageBox.confirm('You have been logged out, you can cancel to stay on this page, or log in again.' +
          '您已注销，您可以取消以停留在此页，或重新登录', 'Confirm logout 确认注销', {
          confirmButtonText: 'Re-Login',
          cancelButtonText: 'Cancel',
          type: 'warning'
        }).then(() => {
          store.dispatch('user/resetToken').then(() => {
            location.reload()
          })
        })
      }
      return Promise.reject(new Error(res.message || 'Error'))
    } else {
      return res
    }
    // return res
  },
  error => {
    console.log('err' + error) // for debug
    Message({
      message: error.message,
      type: 'error',
      duration: 5 * 1000
    })
    return Promise.reject(error)
  }
)

export default service
